Artificial stone



106. UUlVllUblllUNo,

COATING OR PLASTIC.

UNITED STATES Gross Reterenee PATENT OFFICE.

- HENRY A. DANIELS, OF YOXKERS, NEIV YORK.

ARTIFICIAL STONE.

SPECIFICATION forming part of Letters Patent No. 346,730, dated August3, I886.

Application filed January 15,1856.

To all 20710721 2'2 may concern:

Be it known that 1, HENRY A. DANIELS, a citizen ofthe United States, anda resident of Yonkers, in the county of \Vestchcster and State of NewYork, have invented certain new and useful Improvements in ArtificialStone, of which the followingis a specification.

In a separate application for Letters Patent I have described anartificial stone composition consisting of sand, cement, and a bindingInaterialas caoutchoucwhich composition is made into a paste andhardened, and constitutes an artificial stone adapted for use for manypurposes.

My present invention consists of an artificial stone in which theingredients above named are combined with iotash or iearlash, and insome instances with alum, and, when desired, with any suitablecoloring-matter, according to the color or tint which it is desired toimpart to the stone. By the addition of pearlash or potash, orequivalent alkali, to the composition of sand and cement, I. effectapartial solution and crystallization of the silica in the saidcomposition, so that the resultantstone is harder and has more of acrystalline character than would otherwise result, and by the additionof alum to the coinpositiomwhen glue isemployet as a )inding material, Irender the said glue hard and insoluble, so as to make a. compositionbetter fitted for outside work than when the glue is used without thealum.

In the manufacture of the artificial stone I use the sand and cement insuitable proportionssay for instance, ten pounds of sand five pounds ofcement. one-fourth of a pouuil of glue. gum, or caoutchouc to eachgallon of Serial No. 165,674. (No specimens.)

liquid in which it is tdssolved-and add onequarterof apound of thealkali to each gallon of the solution, and mix tmr with the sand andcement until a paste of proper consistency is formed. This paste is thenmolded or spread with a trowel or otherwise applied, and when it setsand dries will form a hard, durable block or coating.

\Vhen any coloring material is used it is mixed with the cement.

Although I have specified the proportions which I have foundmostpracticable, the said I am aware that friable gums as shellac havebeen used in stone compositions, and do not claim, broadly, the use ofgum as a binding material; but I use soft elastic binding matter-ascaoutchouc or glucwhich will not pulverize an crum le away.

\Yithont limiting myself to theprecisc proportion of ingredientsspecified, I claim 1. Anartificialstone consistingofsand,cem' cut, anon-friable binding materiah-asgrggt hone-and an alkali-aspeaHash-combined substantially as set Torth.

2. A composition for artificial stones, consisting of sand and cemcnt,anon-friable bind ing material-as caoutchoue-and an alkalias pearlash-insolution, substantially as de scribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HENRY A. DANIELS.

Vi tn csses:

HARRY M. DICKINSON, H. P. STAMFORD.

proportions may in some instances be varied.

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